TCA62724FMG_15 datasheet(8/15 Pages) COMCHIP

Part #	TCA62724FMG

Description	3-Channel Constant-Current LED Driver

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Manufacturer	COMCHIP [Comchip Technology]

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TCA62724FMG(O,S,EL

2010-06-24

8

Setting of Output Current (Reference Data)

The output current is set by the resistance connected between terminal REXT and GND.

The output current can be set according to the following expression.

Output Voltage – Output Current (Reference Data)

Note1: These application examples are provided for reference only. Thorough evaluation and testing should be implemented

when designing your application's mass production design.

VDS vs. IOUT

0

20

40

60

80

100

120

140

160

180

0.0

0.5

1.0

1.5

2.0

2.5

3.0

VDS (V)

IOUT vs. REXT

0

25

50

75

100

125

150

020

40

60

80

100

REXT(Ω)

REXT = 3.6 kΩ

REXT = 11 kΩ

REXT = 110 kΩ

IOUT (mA) =

1.17 (V)

REXT (kΩ)

× 460

Ta=25°C

VDS=1.0 V

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